-30.5% is the change from 977 to 679
Calculation steps:
[( 679 - 977 ) ÷ 977] x 100 = -30.5%
Formula
Percentage change = [(679 - 977) / 977] x 100
Subtract the new number by the original number
679 - 977 = -298
-298 ÷ 977 = -0.30501535312180145
-0.30501535312180145 x 100 = -30.5%